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Professional Automotive Repair Technical Discussions for July 13, 2007 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1972 Buick electra 225 455CID air dist VIN: 4V39T2Y202 I am almost sure that I have a problem with the control head in the dash that routes vac. to the door motors that controls the air dist. I am not getting a good flow of air out of the upper ducts. when I place the lever in recir. I still get most of thew air f... |
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| 1998 Buick Park Avenue 3.8L pass. doors VIN: 1G4CW52KXW Hello All Vehicle came in with both passenger side doors unable to open. Tried power locks, no effect, tried manual levers they do not work and seem sloppy. I can hear the door lock accuators in all doors and they sound ok. I was able to partialy remove the fr... |
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| 1997 Chevrolet Blazer 4.3L Hesitation, Misfire VIN: 1GNDT13W6V Hello Fellow Techs, This truck came in after the customer ran out of gas. The customer says that the truck ran fine until then. The truck will run fine at idle and at slow acceleration. When you accelerate at half throttle or more, the truck will start to stu... |
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| 1999 Chevrolet Express 2500 5.7L Hesitation VIN: 1GAGG25R8X Thanks to all fellow techs who review this and try to help me out. I have terrible luck with trying to diagnose these CSFI engines. Customer brought to our shop, it was a recent car lot purchase, with bad hesitation, back firing under slight load, checked fuel... Trouble codes: P0101, P0172, P0175, P0131, P0137, P0151 |
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| 2001 Chevrolet Impala 3.4L trans or conv VIN: 2G1WF52E01 hey this vehicle has no codes stored except cat/con efficiency i believe its from exhaust donut manifold leak. vehicle has very low performance all ranges, the lack of power makes it difficult to feel shifts. scan tool shows its in 1st gear at pull off but it ... |
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| 2003 GMC Envoy XL SLE 5.3L Mechanical this vehicle runs great except for a scrapping, grinding noise from auto transmission when in OD. When down shifted to 3Rd the noise goes away, any ideas before we pull it apart. With 83K are we better off with a SRTA? Thanks |
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| 1994 Pontiac Grand Am SE 2.3L No Start, MIL Lamp on VIN: 1G2NE553XR need help, vehicle was towed in with complaint of vehicle runs rough and stalled and now will not start. vehicle started an ran fine for few minutes, then ses light came on and vehicle ran rough and stalled and has not started since. check for codes and found ... Trouble codes: 19 (7x reference circuit) |
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| 2000 Pontiac Grand Prix GT 3.8L No Start VIN: 1G2WP12K8Y Vehicle will start and run for 2+ seconds.. Shuts down by stopping injectors.. There is no 'theift' light present.. Oil level is correct.. Fuel pressure and fuel quality are correct.. 60 psi at prime and rests at 50 psi.. Remote locks and unlocks doors.. I am ... Trouble codes: P0131 (O2 Low bank 1), P0171 (lean bank 1), P0300 (misfire occured), P1106 (MAP intermitent high), P1326 (Theift fuel signal lost), P1811 (fuel trims at maximum adapts) |
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| 2002 Pontiac Sunfire SE 2.2L No Start VIN: 1G2JB12482 hi guys, this car came in hook. we checked fuel pressure. there is no pressure. so replcaed feul pump. now it has good pressure, 60 psi. good spark, good injector pulse,good cylinder compression, ckp has rpm reading, injector are spraying good, still does not ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Buick Regal 3.1L No Start VIN: 2G4WB14T7L I WANT TO THANK EVERYONE WHO REPLIED IT WAS THE CRANKSHAFT POSITION SENSOR.I HAD A GOOD SIGNAL I THOUGHT.BUT, I DIDN'T HAVE ENOUGH AMPLITUDE ON THE SIGNAL.SO I PULLED THE SENSOR,AND UNDER CLOSE INSPECTION I FOUND A HAIR LINE CRACK. |
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| 2001 Buick LeSabre Limited 3.8L No Crank VIN: 1G4HR54K41 Hi everyone and thank you to everyone who took time to help. We spent a few days trying to get this car to show its problem but the car would not act up. Many of yous suspected the PK3 transponder module but as the car never acted up I could not conclude a dia... |
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| 1994 Chevrolet C1500 Cheyenne 4.3L crankshaft endplay VIN: 1GCDC14Z9R o.k guys, crankshaft endplay. This is what I have tested. transmision pressure was in spec after extensive test drive. flywheel runout was not excessive. all pulley alignments were good. unfortunatly, we chose to put a crank kit, timming chain only in a 4.3 gm... |
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| 2000 Chevrolet Tahoe 5.3L Poor Idle Quality, MIL Lamp on VIN: 1GNEC137XY ok first of all thanks to Doug,Ray,Randolph and Antonio for all your help, this is an intermittent problem custumer still driving it and has not come back yet, as soo as car comes back I'm going to do all your recommendations. Trouble codes: P1221 (tp sensor 1-2 correlation). |
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| 2002 Chevrolet Suburban 1500 LS 5.3L stuck on defrost VIN: 3GNFK16752 Thanks to all!! we found broken wires near fire wall truck had moon roof install and wires were rubbing together. |
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| 2003 Chevrolet Tahoe LS 5.3L booster VIN: 1GNEK13303 A factory brake booster did the trick. Ordered a factory brake booster. The brake pedal also feels much better. OEM Car Guest my A**. Thanks to all that replied as all I have learned from. |
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| 2004 Chevrolet Suburban 2500 LS 8.1L Suspension VIN: 1234567989 we found out kids on the way to lake with boat,bottomed out at high speed shocks stuck in high position.At 500.00plus a shock they didnt want to fix it. It also disturbes me people dont read post before giving advice.some are very good i stated this system doe... |
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| 1980 GMC C1500 5.7L No Start VIN: TCZ14A1540 Well thanks for all your help! We fixed this old Chevy, but not how I expected. Lesson learned here is even in [...] F temps, these diesels need glow plugs, even if only for 5 seconds or so, as some of you suggested. I couldn't find anything wrong with t... |
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